This year, my team and I created a planetary transmission for the Online CAD Challenge. It would be great if you could go check it out and vote!
I would also like to talk about some stuff relating to the design:
- We got the idea from jpearman’s animation of a planetary transmission made from VEX parts. (This idea originally came from this robot if I’m not mistaken)
- Future revisions of this transmission would have more solid mounting points and alternate gear ratios. Currently, the ratios are 1:1 - 1:4.33 (VEX) and 1:1.25 - 1:5.42 (PT). We would like to change the gears to allow ratios like 1:0.66 - 1:2.5. I believe that all you would have to do is reduce the size of the input sprocket gear.
Please leave a reply if you have any comments or questions.